Indicating mechanism



Aug. 12, 1930; H. S CHLAICH I I NDICATING MECHANISM Filed Oct. 18, 1926 2 Sheets-Sheet 1 INVENTOR HER/IAN Juan/c BY MFMZ ATTORNEYS 1930. H. SCHLAICH 1,772,568

INDICATING MECHANI SM Filed Oct. 18, 1926 2 Shoots-Sheet 2 Afro Pairs press the plug and cause it to sup Patented Aug. 12, 193

rnm'rso STATES PATENT OFF ICE;

mnrcarme mncnmsm Applicatlonvflled October 18,

. This invention relates to the mounting of temperature responsive elements used inconjunction with distance temperature "indica-, tors particularly as applied ,to automobiles.

In my pending a plication, Serial No. 6.67 ,7 08 for mounting or temperature responsive elements, filed October 10, 1923, I have disclosed a warning instrument for motor vehicles comprising'a temperature res onsive 1o element mounted in the flexible hose t at carries the cooling medium from the water jackets to the radiator. 7 g

The present invention is in the nature of an improvement upon the above mentioned device and has for its princi a1. object to increase the security with which the temperature responsive element is clamped to thehose and to reduce wearing of the hose in use so that liability of leakage due to such mounting of the element is avoided; v 1

To this end, in accordance with one important feature of the invention provision is madeof a mounting sleeve for the temperature responsive element insertable through an opening in the hose from the interior of the hose and having a flange -of substantlal area for engagement with the inner face f thehose. A clamping and steadying plate s located outside the hose and drawn'into posltion to cooperate with the sleeve flangefor firmly clampin the hose by means of a nutv threaded onto t e outwardly protrudin y portion of said sleeve. The clamping p ate is provided with a recess or seat into which the hose material is deformed by the clamping pressure a plied to the sleeve flange.

It is a rther object of 4 he invention to safeguard the armored capillary tubingthat connects the temperature responsive element with the indicator, against sharp bending and against damaging vi ration ad acent the connection of said tubinglto the temperature responsive element. v I v For this purpose rovision is made in one embodiment of a so rubber plugsurround; ing the capillary tubing and of a bonnet enclosin sald plu which may be threaded onto t e stem of t e mounting sleeve to comrt the capillary tubing. The bonnet itsel may be -'through eapi1lary tube 11 with a temperathe engine,,where such cooling medium has 1926. Serial No. 142,291.

provided 'with I a smooth surfaced flared mouth, the sidesof which limit bending of the capillary tubing where it emerges from the bonnet. The rubber lug also. serves as .a packing for preventing eakage between the temperature responsive element and the mounting sleeve. 1 v

In another embodiment the bending of the capillary tubing is limited by surrounding said tubing adjacent thetemperature responsive element with a supporting coil spring.

Another object is to provide a, working tool conveniently adapted to prepare the hose coupling ofa cooling system for the purpose of mounting the temperature *responsive element therein.

Other objectswill be apparentfrom readving this specification in connection with-the accompanying drawings, in which:

n Fig. l is a fragmentary .side view of an v autqmobi e cooling system embodying my device d Fig. 2 is a vertical cross section. of my de- M vice Fig. 3 is a cross section takenalong the liner 3-3 of Fig. 2, looking in the direction'of the arrows;

Fig]. 4 is a punch especially adapted for do ing 1; e necessary cutting in connectionwit the installation of my device; p

Fi 5 is a'verticalcross section of a modified orm of the invention and Fi '6 is a detail of he form shown in Fig. 5. v Referrin now-in detail to the drawings in which similar characters refer to simi ar parts throughout, a temperature indicator 10 of the distance type, is operatively connected ture resprmsive assembly indicated generally as 12. This temperature responsive assembly is mounted on ahose 13'which conveys the heated cooling medium from the jackets 14 of attained its highest temperature, teth'e, radiafor 15 where it is-cooled. The'hose; or flexible tubular coupling 13, may besecured at its ends to the water system of the engine and to the radiator in any desired manner, as by re- 0 movableclamps 16 and 17. This ortion of the structure 1s housed in the hoo 18 of the wehicle.

The temperature responsive assembly 12 com rises a thermal element 19, represented in e illustrative embodiment of my invention in, the form of a temperature fluid con-- taining bulb or chamber. This bulb is' rovided with an annular flange 20 adapts to seat in an annular recess in'a sleeve 21. .The' .sleeve 21, 1s

rovided with exterior screw threads 22 w ich cooperate with the screw face of the flan e is preferably flat and provides a broa clamping face for engagethreads of a tightening nut 23 anda bonnet 24. The sleeve 21 has an annular flange 25 which lies within the hose 13. The upper ment with the inner face of the hose 13. A

steadying plate 26 having an opening therein '-to .reeeive the outwardly projecting portion of the sleeve 21 is clam ed firmly against the exterior. of the hose y the'nut 23. This late 26 is preferably provided with aflat ttomed recess in that portion of its lower face which overlies the flange 25, but beyond this area itis curved to conformto the contour of the hose 13. 1 As seen in Fig. -3the threaded sleeve 21 is flattened on two sides. The opening in the steadying plate 26 for receiving the sleeve is of thesame'shape. The steadying plate .is efiective, therefore, toprevent turning of v the sleeve 21 when the nut 23 is being thread- 28, wit connected at one end to the thermal cham-.

- gri ped, and t with a bell mouth to obviate chafing of. the armor 29, and toprevent too sharp bend- ,in 'ofthecapillary y 11 order to apply the above described tensv system of a motor the hose 13 is first discon ed onto it. The tightenin hose material to of the nut 23 causes the deformed into the recess .of the steadyinglplate so that it is very firmly e assembly is fixed a ainst' shi 1n or substantial swinging. A ,tu ular lug 2 of resilient material is interposed tween the upper side of the flange 20 of the'bulb 19, and the inner face of the bonnet 24. The plug 27 acts as a cushi ning medium for the bulb 19, and seals the space between the bulb 19 and the sleeve 21. Througl this tubular plug a capillary tube its armor 29 passes, the same being ber 19 and at the other end to the temperature'indicator 10. The bonnet 24.- is provided tube. r

perature responsive assembly to the'cooling nected from either the water jack efofthe motor or from the radiaton-and a round hole is-punched in' 'th'e hose wall. The sleeve 21 isthen placed-in the hose through an uncoupledend thereof and is ,thrust outward through the punched hole from within the. hose. v The steadying plate 26 is then placedplpon the outwardly protruding end of theidrawn down into secure clamping save and engagement with the hose by threading'the v nut 23 onto the sleeve "21; During the threadin of the nut onto the sleeve 21,-the sleeve is old against rotation by'the steady- 1 element 19 is next placedin the sleeve 21.

plate 26. The temperature responsive" The bonnet is then screwed down on the 25 is inserted through (the hole-in t e side of the hose 13 from the outside without disconnecting the hose from the engine or'the radiator. The bulb 19 is provided with-a threaded stem 22 which is flattened at 'opposite sides and extends through a ,hole of the same shape in a steadying plate 26 outside the hose. The steadying plate 26 and the flange of the bulb "19 are drawn into Y firm clamping engagement with the hose by the tightening of a nut 23 on the stem 22.

The use of the steadying plate is very advantageous inthis construction for the reasonthat the flange 25 is'necessaril confined in size to a diameter not ve nine in r than the normal-diameter of t e hole in t e hose.

The steadying plate prevents rocking or twisting o the bulb 19- and stem 22 when the vehicle is in operation, and therefore.

greatly reduces wearin ofthehoseby the ange 25 and avoids t 'e likelihood of the flange being displaced to a position in which it does not completely cover the hole'. In this embodiment the by engagement with t e at sides'of the stem 22 to hold the bulb and'stem against rotation while. the nut 23 is being tightened. A sleeve. 31 may be threaded uponthe end f thethreaded shank 22 and has tightly rapped upon it a reinforcing spring 31 of sufiicient stifl'ness to protect-the capillary tube a sha bending and excessive oscillation due to vibration of the vehicle.

n order to cut the nu-c:

provided having the metal cutting tube 32 an the wooden handpiece 83. The hand piece is provided with a tubeiisdriven the ead' or .body of the hand piece 33 so that it is securely embedded therein. 1 The cutting area of the 'tube 32*is such asto-meet the exact requirements for mounting the thermal responsive-element according to, myginvention. The cuttin tool is arm ehea construction and may herefore fbe mclued in p containmgtbe the stead in plateis efiec- I ry aperture inrough'the hose 13, ahand' punch see Fig.

wooden shank 34 on which the tube 32 is supplorted. The cutting parts of this device, and may be thrown away when used. The purchaser, himself, may thus be fully equipped to attach the device, so that the necessity for the employment of skilled labor for such purpose is obviated.

It will. he understood that the invention is tions illustrated, but intend to cover my invention broadly in whatever form its principle may be utilized.

What I claim is:

1. A temperature indicator adapted to be mounted upon a hose having an aperture in its wall, including a flanged and threaded sleeve adapted to be fitted through said hose aperture from within the hose so that the flange abuts the interior of the hose, a thermal responsive element mounted in said.

sleeve, a tightening nut in threaded rela-' tion with said sleeve adapted to clamp the hose against said flange, a steadyingplate between said tlghtening nut and the outer wall of said hose engaging a lar e area-of the hose,

and means connecting the indicating portionof the temperature indicator for operation from the thermal responsive element.

2. A temperature indicator adapted to be mounted upon a hose having an aperture in its wall, including a flanged and threaded sleeve adapted to be fitted through-said hose aperture from within the hose so that the flange abuts the interior of the hose, a tightening nut threaded on the protruding portion of the sleeve, and cooperating with the sleeve flange 'to grip the hose and, seal'the opening therethrough, a temperature respon-' sive element extending through the sleeve 50' into said hose, means retaining said element 1n the sleeve, and means connectlng the indicating portion of the temperature indicator for operationfrom the temperature responsive element.

3. A temperature indicatoradapted to be the sleeve being non-circular in cross sec tion, a .steadying plate outside the hose con forming imcontour to the hose periphery and having an opening through it shaped to fit the threaded portion of the sleeve, 2, tight ing nut threaded on the sleeve for causing the hose to be clamped between the steadying plate and sleeve flange, atemperature responsive element supported in said sleeve, and means connecting the indicating portion of the temperature indicator fo-r'operation from the temperature responsive element.

4. In combination, a temperature responsive element and means for mounting said element in a hose of yielding material so as to be exposed to the contents of the hose, com prising a threaded sleeve having a flange in engagement with the inner face of the hose, a

steadying plate engaging and conforming to the contour of the exterior of the hose, a clamping nut threaded on the sleeve for drawing the steadying plate and the sleeve flange into cooperative hose clampingirelation, a packing between the element and the threaded sleeve, and a further nut on the U sleeve operable to compress such packing.

5. In combination, a temperature indicator, a temperature responsive element, a flexible connection for operating the indicator from the element, means for mounting the temperature responsive element in its 0 er ative environment, and a bonnet surrourr ing the flexible connection adjacent the temperature responsive element, said bonnet being provided with a flared mouth shaped to pre- .sent a curved convex surface for engagement by the flexible connection whensuch connection is bent in any direction, for limiting bending of the connection adjacent the element and distributing the bending throughout a substantial length of the connection.

6.- The combination with a flexible hose, of an outwardly protruding, hollow member fixed and sealed in a wall of the hose,a temperature responsive element removably mounted in the hollow member, and sealing means for preventing egress of the hose contents-between the hollow member and the temperature responsive element mounted therein.

-7. In combination, a. flexible hose of-soft material having an opening therein, a threaded and flanged member having its. flanged portion engaging the interior of thehose around said opening and its threaded portion protruding outward through and beyond the opening, a steadying plate conforming generally to the normal contour of the exterior of the hose but presenting a recess over the portion of the hose i ediately surrounding the opening, and means threaded on said member for drawing'the flanged portion of the member toward the steadying' plate and causing the hose material to be do formed and securely clamped in the recess thereof. 9

8. .The combination with a temperature indicator and a hosecoupling having anaperture in its wall, of a threaded sleeve fittedthrou h said hose coupling in said aperture,

said s eeve having a flange atits lower end 4 I g frmaaes in engagement with the'inner face of the hose, a temperature responsive element mounted in said sleeve, a curved clampin plate upon said sleeve in engagement -wit the external face of the hose, and a nut threaded on the external portion of said sleeve for drawin the clamping plateand sleeve flange into rm grippin englagement with the hose, the clampin 'p ate, aving a 'recess of the same enera contour as the sleeve flan e into WlllCh the hose material is deformed y the clamping pressure of the nut;

9. The combination with a temperaturein- 5 dicatorand' a hose coupling having an aperture in- -its wall, of a threaded sleeve fitted, through said hose coupling in said aperture, meanscooperating with sand sleeve to clamp the hose securely sothat no leakage can occur 20 between the hose and the sleeve, a tempera-- ture responsive element mounted in said sleeve, and means clam ing'the'tem nature 1 responsive element-to t e sleeve ancl sealing the space between the sleeve and the tempera- 25 time res onsive element against leakage.

10. T e combination with a temperature indicator and a hose having an a erture in 3 its wall, of a threaded sleeve fitte through said hose in said aperture, means cooperating with said sleeve to clamp the hose securely so that no leakage can occur between .the hose and the sleeve, a temperature responsive element mounted in said sleeve, and means clamping the temperature responsive eleas ment to the sleeve and sealing the space between the sleeve. and the temperature responsive element against leakage, com rising a packin V plug and a bonnet'threade onto the sleeve or compressing the plugagainstthe 4o sleeve and the temperature responsive element. 7

- In testimony .whereof I haven fixed my signature to thisfiplecification.

\ RMAN SCHLAICH. 

